CN102587109B - Regeneration process for recycling waste spun yarn to form spinnable fiber - Google Patents
Regeneration process for recycling waste spun yarn to form spinnable fiber Download PDFInfo
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- CN102587109B CN102587109B CN201210064315.3A CN201210064315A CN102587109B CN 102587109 B CN102587109 B CN 102587109B CN 201210064315 A CN201210064315 A CN 201210064315A CN 102587109 B CN102587109 B CN 102587109B
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Abstract
The invention discloses a regeneration process for recycling a waste spun yarn to form a spinnable fiber. The process comprises the following steps of: 1, desizing by using amylase as a desizing agent, wherein the amylase is in an amount which is 0.5 to 1 percent of the total weight of the yarn; 2, stripping by using an oxidizing stripping agent such as sodium chlorite as a stripping agent, wherein 80 percent sodium chlorite is in an amount which is 4 to 6 percent of the total weight of the yarn; 3, bleaching by using sodium hypochlorite as a bleaching agent, wherein 10 percent sodium hypochlorite is in an amount which is 5 to 10 percent of the total weight of the yarn; and 4, dechlorinating by mainly using sodium sulfite and sodium carbonate, wherein the sodium sulfite is in an amount which is 1 to 1.5 percent of the total weight of the yarn, and the sodium carbonate is in an amount which is 1 to 1.5 percent of the total weight of the yarn. Due to the special treatment of the waste spun yarn in the steps, the sized and dyed waste spun yarn can become the spinnable fiber with high quality and a high added value, so that social and economic benefits are improved, and environment friendliness is facilitated.
Description
Technical field
The present invention relates to a kind of refuse yarn of weaving and recycle the regeneration technology that becomes fiber-spinnable.
Background technology
The textile printing and dyeing class factories such as cotton mill, sizing factory, weaving mill, knitting mill all can produce a large amount of refuse yarns every year, and these weaving refuse yarns are generally all used as leftover bits and pieces cheapness and are disposed, or carry out extensive simple process and recycle, and have caused huge waste.
The simple recovery and treatment method generally adopting is at present, first weaving refuse yarn is carried out to manual sort, selects, then, different available refuse yarns is adopted to different processing methods, wherein mainly contain following several: (1) becomes nonwoven fabric raw material (this is current most widely used processing method) through shredding, removal of impurities etc.; (2) after cleaning, removal of impurities, pulverizing etc. are processed as stuffing; (3) the too short short flannel of fiber after pulverizing shredding, for papermaking, chemical sizwe, viscose, high grade paint, gunpowder etc.; (4) cotton mill hard waste etc., processes and substantially can directly become loose thread cotton through operations such as cleaning, oven dry, shredding, combing, removal of impurities, for spinning again.
When being woven into grey cloth, because warp thread is subject to larger tension force and friction, usually there is cracked ends phenomenon in yarn.In order to reduce cracked ends, improve brute force, smoothness and the ABRASION RESISTANCE of warp thread, in order to guarantee wovenly normally to carry out, yarn all will pass through starching processing weaving as last.Institute's spreading mass is generally natural slurry if starch slurry etc., synthetic slurry are if polyvinyl alcohol etc. and cellulose paste are as carboxymethyl cellulose etc.Certainly, in the middle of slurry, also has other appropriate auxiliary agent.These slurries are convenient to weave, but be but unfavorable for other production and processing, if will not remove, by to follow-up blooming, the operation such as spinning brings many troublesome problem (as staining roller, cup etc.), even cause the product of rear operation to produce many defects, in a word, the quality and benefits of following process is had a strong impact on.So, before yarn is regenerated as to fiber-spinnable, must first remove slurry.Remove slurry and in textile printing and dyeing, cry destarch.If there is no destarch, while spinning so, can have a strong impact on quality and the efficiency of several operations such as drafting.
Along with scientific and technological progress, textile mills adopt mixed slurry starching mostly at present, are not single slurry sizing.So, in destarch process, also to, according to the component of mixed slurry and mixed proportion, select suitable desizing agent and technique, be beneficial to improve destarch efficiency.
The dyestuff using while painting for yarn, in order to reach the object of regeneration, must first strip and bleach, and namely by chemical action, dyestuff on fiber is destroyed, and makes the eclipsed and bleaching of yarn reach certain whiteness.
At present, stripping agent employed both at home and abroad is mainly reducibility stripping agent and the large class of oxidisability stripping agent two.Wherein, the destruction of the dyestuff color development system of reducibility stripping agent to some structure is reversible, causes some color to have no idea to divest totally, can only shell shallow, and low, the poor stability of whiteness after bleaching.Oxidisability stripping agent is different, can cause the group of the color development system of some composition dye molecule to destroy under certain condition, as azo group decomposition, amino oxidation, HM, complexation of metal ions depart from etc., these irreversible structural changes have caused decolouring and the colour killing of dyestuff.Therefore, theoretically, oxidisability stripping agent can be used as the clean treatment agent of stripping completely.
Summary of the invention
The problem existing in order to solve prior art, the present invention is directed to the weaving refuse yarn of starching and dyeing, provide a kind of refuse yarn of weaving to recycle the regeneration technology that becomes fiber-spinnable, by weaving refuse yarn is carried out destarch, stripped, after bleaching, dechlorination process, make it the raw material of the fiber-spinnable that becomes high-quality, high added value.Wherein, select amylase to carry out destarch, select sodium chlorite to strip, select clorox to bleach, select sodium sulfite, soda ash to carry out dechlorination.
The regeneration technology that weaving refuse yarn recycling of the present invention becomes fiber-spinnable comprises the following steps successively:
(a) destarch: first the weaving refuse yarn of wanted destarch is added in container, then in container, add amylase, diastatic weight accounts for the 0.5%-1% of weaving refuse yarn weight, again to add in container account for weaving refuse yarn weight 1%-2% salt, account for the bleeding agent of weaving refuse yarn weight 0.2%-0.5%, seal this container, make it to be warming up to 50 ℃-55 ℃, this temperature continues to keep 30-60 minute, then cleans.
(b) strip: the weaving refuse yarn cleaning after destarch is stripped.To adding concentration in the weaving refuse yarn of container, be first 80% sodium chlorite, its weight accounts for the 4%-6% of weaving refuse yarn weight, and then add the bleeding agent that accounts for weaving refuse yarn weight 0.2%-0.5%, make the pH value of solution reach 3.5-4.2; bath raio reaches 1: 5-1: 10; to seal this container, at ambient temperature, soak 3-5 hour.
(c) bleaching: destarch, bleach again after having stripped.To adding concentration in the container being filled with water, be 10% liquor natrii hypochloritis, its weight accounts for the 5%-10% of refuse yarn weight, makes solution pH value reach 9-10; bath raio reaches 1: 5-1: 10; to soak at ambient temperature 40-80 minute, then discharge water, and completes the bleaching to weaving refuse yarn.
(d) dechlorination: carry out dechlorination after bleaching.First to adding in container and the clear water of above Treatment Solution equivalent, then add the sodium sulfite that accounts for weaving refuse yarn weight 1%-1.5% and the soda ash that accounts for weaving refuse yarn weight 1%-1.5%, keeping bath raio is 1: 5-1: 10, and temperature is raised to 50 ℃-60 ℃, and 30-50 minute is cleaned in insulation.
By the cleaning of weaving refuse yarn, oven dry, shredding, combing, removal of impurities after dechlorination, just become fiber-spinnable.
The present invention is by above regeneration technology, and the refuse yarn that makes to weave becomes a kind of fiber-spinnable raw material, not only can utilize well textile waste, makes it have higher added value, but also has very high Social benefit and economic benefit, is conducive to environmental protection.
The specific embodiment
Several specific embodiment of the present invention are done to further detailed description below.
Embodiment 1
The typical process flow of the regeneration technology of the embodiment of the present invention 1 is: select sorted raw material → cleaning → destarch → clean → strip → bleaching → dechlorination → cleaning → oven dry → shredding → combing → removal of impurities → become fiber-spinnable.Below to destarch involved in the present invention, strip, bleaching, four main technological steps of dechlorination be described in detail.
(a) weaving refuse yarn selected, clean after, carry out destarch.Yarn sizing is mainly to adopt the slurry mixing with chemical sizwe and Starch Size, and the selection of desizing agent should decide according to the principal component in slurry.The Component comparison of starch slurry is high in the middle of slurry, and other slurry relatively, the more difficult removal of starch slurry; For chemical sizwe, be easier to remove with hot water destarch and oxidation destarch ratio.The present invention adopts amylase as desizing agent, concrete desizing is, the weaving refuse yarn of wanted destarch is added in water container, first to adding in container, account for the alpha amylase of weaving refuse yarn weight 0.5% (amylase will first dissolve before adding, lower same), to adding in container, account for the salt of weaving refuse yarn weight 1% (salt will first dissolve before adding again, lower same), (bleeding agent is a kind of common non-ionic surface active agent to account for the osmotic agent solution of weaving refuse yarn weight 0.2%, such as AP-810 etc., lower same), seal this container, make it to be warming up to 50 ℃, this temperature continues to keep 60 minutes, clean.
(b) the weaving refuse yarn after cleaning is stripped.Stripping is exactly by chemical action, and the dyestuff on yarn is destroyed, and makes yarn lose color.The refuse yarn of the present invention operation of stripping adopts oxidisability stripping agent sodium chlorite.Sodium chlorite is a kind of oxidisability stripping agent that can strip clean completely.In order to reduce costs, to ensure the quality of products, this technique is also used diluted acid as activator, adopts the cold method of floating to carry out normal temperature and strips, and sodium chlorite has discoloration, when stripping, also has the effect of supplementary destarch.To adding concentration in container, it is 80% sodium chlorite, its solid weight account for weaving refuse yarn weight 4% (sodium chlorite will first dissolve before adding, lower same), and then add the osmotic agent solution that accounts for weaving refuse yarn weight 0.2%, and make pH value reach 3.5, bath raio reaches 1: 5, airtight container, at ambient temperature, start circulating pump, liquid stream is circulating and is soaking 5 hours.
(c) destarch, stripped after, bleach, the present invention adopts clorox technique.Clorox manufacture is simple, with low cost, easy to operate, equipment is simple, is to use at present more a kind of fiber bleached dose, for the natural colouring matter on fiber and coloring matter, has discoloration.To adding concentration in container, be 10% liquor natrii hypochloritis, its weight accounts for 10% of refuse yarn weight, and test makes pH value reach 9; bath raio reaches 1: 5, starts at ambient temperature circulating pump, and liquid stream is circulating and soaking 40 minutes; then discharge water, and completes the bleaching to the refuse yarn of weaving.
(d) after bleaching, carry out dechlorination, dechlorination of the present invention adopts sodium sulfite, soda ash technique.To adding in container and the clear water of above Treatment Solution equivalent, then (sodium sulfite and soda ash will first dissolve before adding to add the soda ash that accounts for the sodium sulfite of weaving refuse yarn weight 1% and account for weaving refuse yarn weight 1.5%, lower same), keeping bath raio is 1: 5, temperature is raised to 60 ℃, start circulating pump, liquid stream is circulating to be incubated and is cleaning 50 minutes, then discharge opeing.
By the cleaning of weaving refuse yarn, oven dry, shredding, combing, removal of impurities after dechlorination, just become fiber-spinnable.
Embodiment 2
Only be that from the difference of embodiment 1 selection of technological parameter is different, other does not change, specific as follows:
In destarch step, first in container, add the amylase that accounts for weaving refuse yarn weight 0.6%, then add 1.2% salt, 0.5% bleeding agent, be warming up to 52 ℃, be incubated 50 minutes, then clean.
Stripping in step, to container, adding concentration is 80% to account for the sodium chlorite of weaving refuse yarn weight 4.5%, then adds 0.5% bleeding agent, make the pH value of solution reach 3.8, bath raio is 1: 6, at ambient temperature, start circulating pump, liquid stream is circulating and is soaking 4.5 hours.
In blanching step, to adding concentration in container, be 10% to account for the clorox of weaving refuse yarn weight 8.5%, making solution pH value is 9, bath raio is 1: 6, soaks at ambient temperature 50 minutes, then discharges water, and completes the bleaching to weaving refuse yarn.
In dechlorination step, to adding in container, account for the sodium sulfite of weaving refuse yarn weight 1.2% and 1.3% soda ash, keeping bath raio is 1: 6, and temperature is raised to 55 ℃, starts circulating pump, and the insulation that circulating of liquid stream is cleaned 50 minutes.
By the cleaning of weaving refuse yarn, oven dry, shredding, combing, removal of impurities after dechlorination, just become fiber-spinnable.
Embodiment 3
Only be that from the difference of embodiment 1 and 2 choosing of technological parameter is different, other does not change, specific as follows:
In destarch step, first in container, add the amylase that accounts for weaving refuse yarn weight 0.7%, then add 1.5% salt, 0.4% bleeding agent in container, be warming up to 53 ℃, keep 45 minutes, then clean.
Stripping in step, to adding concentration in container, be 80% to account for the sodium chlorite of weaving refuse yarn weight 5%, then add 0.4% bleeding agent, the pH value that makes solution is 4.0, and bath raio is 1: 8, at ambient temperature, starts circulating pump, and liquid stream is circulating and is soaking 4 hours.
In blanching step, to adding concentration in container, be 10% to account for the clorox of refuse yarn weight 8%, making solution pH value is 9; bath raio is 1: 8, at ambient temperature, starts circulating pump; liquid stream is circulating and soaking 60 minutes, then discharges water, and completes the bleaching to weaving refuse yarn.
In dechlorination step, to adding in container, account for the sodium sulfite of weaving refuse yarn weight 1.3% and 1.2% soda ash, making bath raio is 1: 8, and temperature reaches 52 ℃, starts circulating pump, and the insulation that circulating of liquid stream is cleaned 35 minutes, then discharge opeing.
Embodiment 4
Only be that from the difference of embodiment 1,2 and 3 selection of technological parameter is different, other does not change, specific as follows:
In destarch step, first in container, add the amylase that accounts for weaving refuse yarn weight 0.8%, then add 1.5% salt, 0.3% bleeding agent in container, be warming up to 55 ℃, this temperature continues to keep 40 minutes, then cleans.
Stripping in step, to adding concentration in container, be 80% to account for the sodium chlorite of weaving refuse yarn weight 5.5%, then add 0.3% bleeding agent, the pH value that makes solution is 4.2, and bath raio is 1: 10, at ambient temperature, start circulating pump, liquid stream is circulating and is soaking 3.5 hours.
In blanching step, to adding concentration in container, be 10%, account for the clorox of refuse yarn weight 6%, making solution pH value is 10, and bath raio is 1: 10, at ambient temperature, starts circulating pump, and liquid stream is circulating and is soaking 70 minutes, completes the bleaching to weaving refuse yarn.
In dechlorination step, to adding in container, account for the sodium sulfite of weaving refuse yarn weight 1.5% and 1.0% soda ash, keeping bath raio is 1: 9, and temperature is raised to 50 ℃, starts circulating pump, and the insulation that circulating of liquid stream is cleaned 30 minutes, and then discharge opeing, completes dechlorination.
Embodiment 5
Only be that from the difference of embodiment 1,2 and 3 choosing of technological parameter is different, other does not change, specific as follows:
In destarch step, first in container, add the amylase that accounts for weaving refuse yarn weight 1.0%, then add 2.0% salt, 0.4% bleeding agent in container, be warming up to 50 ℃, this temperature continues to keep 35 minutes, then cleans.
Stripping in step, to adding concentration in container, be 80% to account for the sodium chlorite of weaving refuse yarn weight 6.0%, then add 0.35% bleeding agent, the pH value that makes solution is 4.2, and bath raio is 1: 9, at ambient temperature, start circulating pump, liquid stream is circulating and is soaking 3 hours.
In blanching step, to adding concentration in container, be 10%, account for the clorox of refuse yarn weight 5%, making solution pH value is 10, and bath raio is 1: 9, at ambient temperature, starts circulating pump, and liquid stream is circulating and is soaking 80 minutes, completes the bleaching to weaving refuse yarn.
In dechlorination step, to adding in container, account for the sodium sulfite of weaving refuse yarn weight 1.4% and 1.4% soda ash, keeping bath raio is 1: 10, and temperature is raised to 50 ℃, starts circulating pump, and the insulation that circulating of liquid stream is cleaned 40 minutes, and then discharge opeing, completes dechlorination.
The technological parameter list of the various embodiments described above:
The present invention compared with prior art, has following useful technique effect:
By implementing weaving refuse yarn provided by the invention, recycle the regeneration technology that becomes fiber-spinnable, a large amount of refuse yarns that can make the textile printing and dyeing class factories such as cotton mill, sizing factory, weaving mill, knitting mill produce become there is high-quality, the fiber-spinnable raw material of high added value, for ring spinning or open-end spinning, not only improve Social benefit and economic benefit, and be conducive to environmental protection.
(1) increase destarch operation, thoroughly solved the stained equipment of slurry, affected the problem of subsequent handling working (machining) efficiency, also greatly improved product quality.
(2) sodium chlorite is realized also discoloration when stripping, and uses clorox during bleaching, both can bleach yarn, yet to not divesting clean pigment, strips continuing simultaneously, and the two has good synergy.
(3) use separately chlorite bleaching cost high especially, partial pigment divests unclean; Fiber strength damage is very large to use separately sodium hypochlorite bleaching, and bleaching weight-loss ratio is also very large.The two uses simultaneously and had both reduced cost, has reduced again the strength damage of fiber, has reduced bleaching weight-loss ratio, has greatly improved product quality and economic benefit.
(4) shortened the time of stripping, can reduce half the time, thereby increase the benefit.
(5) increase dechlorination process, product quality is improved, and more met environmental requirement, be conducive to close friend to environment and the saving of resource.If there is no dechlorination, also will have a strong impact on product quality and product can not meet the requirement of environmental protection.
Wherein, described container refers to the plurality of devices that printing and dyeing mill is used, as common kier, high temperature-pressure dyeing machine or stock dyeing machine, etc.
Described bath raio is printing and dyeing technical term, the i.e. ratio of the volume of the weight of fabric to Treatment Solution.For example, bath raio just refers to the fiber aqueous solution of 10 tons of processing 1 ton at 1: 10.
The size of described pH value, available dilute sulfuric acid or acetic acid change.
Described amylase, salt, sodium chlorite, soda ash, sodium sulfite itself are solids, after need to first dissolving, add in treatment fluid.Described amylase is alpha amylase.
Claims (8)
1. the refuse yarn of weaving is recycled a regeneration technology that becomes fiber-spinnable, comprises the following steps successively:
(a) destarch: select amylase as desizing agent, first the weaving refuse yarn of wanted destarch is added in water container, then in container, add amylase, the amylase adding accounts for the 0.5%-1% of weaving refuse yarn weight, add again and account for the salt of weaving refuse yarn weight 1%-2%, the bleeding agent of 0.2%-0.5%, be warming up to 50 ℃-55 ℃, start circulating pump, the circulation of liquid stream and maintenance temperature 30-60 minute;
(b) strip: selective oxidizing stripping agent sodium chlorite is stripped, to adding concentration in container, be first 80% sodium chlorite, the sodium chlorite adding accounts for the 4%-6% of weaving refuse yarn weight, add again the bleeding agent of 0.2%-0.5%, making the pH value of solution is 3.5-4.2, and bath raio is 1: 5-1: 10, under room temperature, start circulating pump, the liquid stream immersion 3-5 hour that circulating;
(c) bleaching: select clorox to bleach, to adding concentration in container, it is 10% clorox, the clorox adding accounts for the 5%-10% of refuse yarn weight, making pH is 9-10; bath raio is 1: 5-1: 10; start at ambient temperature circulating pump, and the liquid stream immersion 40-80 minute that circulating, then discharges water;
(d) dechlorination: select sodium sulfite, soda ash to carry out dechlorination, first to adding in container and the clear water of above Treatment Solution equivalent, in container, add the sodium sulfite that accounts for weaving refuse yarn weight 1%-1.5% and the soda ash that accounts for weaving refuse yarn weight 1%-1.5% again, keeping bath raio is 1: 5-1: 10, temperature is 50 ℃-60 ℃, start circulating pump, liquid stream is circulating to be incubated and is cleaning 30-50 minute.
2. regeneration technology according to claim 1, is characterized in that: in described destarch step, described amylase accounts for 0.5% of weaving refuse yarn weight, and salt accounts for 1%, bleeding agent accounts for 0.2%, is warming up to 50 ℃, and temperature retention time is 60 minutes, then cleans; Described, strip in step, described sodium chlorite accounts for 4% of weaving refuse yarn weight, and bleeding agent accounts for 0.2%, and pH value is 3.5, and bath raio is 1: 5, and under room temperature, soak time is 5 hours; In described blanching step, described clorox accounts for 10% of weaving refuse yarn weight, and pH value is 9, and bath raio is 1: 5, and under room temperature, soak time is 40 minutes; In described dechlorination step, described sodium sulfite accounts for 1% of weaving refuse yarn weight, and soda ash accounts for 1.5% of weaving refuse yarn weight, and bath raio is 1: 5, and temperature is 60 ℃, and insulation scavenging period is 30 minutes.
3. regeneration technology according to claim 1, is characterized in that: in described destarch step, described amylase accounts for 0.6% of weaving refuse yarn weight, and salt accounts for 1.2%, and bleeding agent accounts for 0.5%, is warming up to 52 ℃, and temperature retention time is 50 minutes, then cleans; Described, strip in step, described sodium chlorite accounts for 4.5% of weaving refuse yarn weight, and it is 3.8 that bleeding agent accounts for 0.5%, pH value, and bath raio is 1: 6, and under room temperature, soak time is 4.5 hours; In described blanching step, described clorox accounts for 8.5% of weaving refuse yarn weight, and pH value is 9, and bath raio is 1: 6, and under room temperature, soak time is 50 minutes; In described dechlorination step, described sodium sulfite accounts for 1.2% of weaving refuse yarn weight, and soda ash accounts for 1.3% of weaving refuse yarn weight, and bath raio is 1: 6, and temperature is 55 ℃, and insulation scavenging period is 50 minutes.
4. regeneration technology according to claim 1, is characterized in that: in described destarch step, described amylase accounts for 0.7% of weaving refuse yarn weight, and salt accounts for 1.5%, bleeding agent accounts for 0.4%, is warming up to 53 ℃, and temperature retention time is 40 minutes, then cleans; Described, strip in step, described sodium chlorite accounts for 5% of weaving refuse yarn weight, and it is 4.0 that bleeding agent accounts for 0.4%, pH value, and bath raio is 1: 8, and under room temperature, soak time is 4 hours; In described blanching step, described clorox accounts for 8% of weaving refuse yarn weight, and pH value is 8.5, and bath raio is 1: 8, and under room temperature, soak time is 60 minutes; In described dechlorination step, described sodium sulfite accounts for 1.3% of weaving refuse yarn weight, and soda ash accounts for 1.2% of weaving refuse yarn weight, and bath raio is 1: 8, and temperature is 52 ℃, and insulation scavenging period is 35 minutes.
5. regeneration technology according to claim 1, is characterized in that: in described destarch step, described amylase accounts for 0.8% of weaving refuse yarn weight, and salt accounts for 1.5%, bleeding agent accounts for 0.3%, is warming up to 55 ℃, and temperature retention time is 30 minutes, then cleans; Described, strip in step, described sodium chlorite accounts for 5.5% of weaving refuse yarn weight, and it is 4.2 that bleeding agent accounts for 0.3%, pH value, and bath raio is 1: 10, and under room temperature, soak time is 3.5 hours; In described blanching step, described clorox accounts for 6% of weaving refuse yarn weight, and pH value is 10, and bath raio is 1: 10, and under room temperature, soak time is 70 minutes; In described dechlorination step, described sodium sulfite accounts for 1.5% of weaving refuse yarn weight, and soda ash accounts for 1.0% of weaving refuse yarn weight, and bath raio is 1: 9, and temperature is 50 ℃, and insulation scavenging period is 30 minutes.
6. regeneration technology according to claim 1, is characterized in that: in described destarch step, described amylase accounts for 1.0% of weaving refuse yarn weight, and salt accounts for 1.0%, bleeding agent accounts for 0.4%, is warming up to 50 ℃, and temperature retention time is 45 minutes, then cleans; Described, strip in step, described sodium chlorite accounts for 6% of weaving refuse yarn weight, and it is 4.2 that bleeding agent accounts for 0.35%, pH value, and bath raio is 1: 9, and under room temperature, soak time is 3 hours; In described blanching step, described clorox accounts for 5% of weaving refuse yarn weight, and pH value is 10, and bath raio is 1: 9, and under room temperature, soak time is 80 minutes; In described dechlorination step, described sodium sulfite accounts for 1.4% of weaving refuse yarn weight, and soda ash accounts for 1.4% of weaving refuse yarn weight, and bath raio is 1: 10, and temperature is 50 ℃, and insulation scavenging period is 40 minutes.
7. according to the regeneration technology described in claim 1-6 any one, it is characterized in that: after described dechlorination step, also clean, oven dry, shredding, combing, removal of impurities.
8. according to the regeneration technology described in claim 1-6 any one, it is characterized in that: before described destarch step, weaving refuse yarn raw material is selected, classified and cleans.
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| CN103556474B (en) * | 2013-10-23 | 2016-01-06 | 浙江省纺织测试研究院 | Cellulose fibre ferment treatment absorption method in a kind of waste textile |
| CN104358102A (en) * | 2014-10-23 | 2015-02-18 | 湖北金利丰纺织制衣有限公司 | Bleaching method for waste textiles |
| CN109629272A (en) * | 2018-11-12 | 2019-04-16 | 苏州工业园区职业技术学院 | A kind of dyeing method of even dyeing |
| CN110396813A (en) * | 2019-06-23 | 2019-11-01 | 曲兴辉 | A kind of cowboy's leftover cloth bleaching process |
| CN115726186A (en) * | 2021-08-31 | 2023-03-03 | 山东双圆生物科技有限公司 | Waste cloth decolorizing agent containing biological enzyme, preparation method, treating agent and application |
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